Re: Are they having a laugh?
Posted: Sat May 07, 2011 2:43 pm
Hi Kit
I tried replacing the band with more rigid things first. Makes no difference if the glue has gone hard.
I even tried a thin steel rod but will use pvc coated copper rod if I make a successful repair.
Have a good supply of that.
It was this that made me realise that it is the aging, expansion and hardening of the original glue that breaks the contact.
Peeling the plastic foil cracks and breaks the contact membrane on the other side.
Stroking each individual contact with the pressure of a hot iron remelts the glue and remakes the contact without that breakage.
The iron I used was a fixed temperature one of around 400C which is a bit too hot for the plastic foil.
Have now got an iron that can be set as required between 150C and 450C.
Will temperature test some gash plastic foil connectors from the junk box first.
John
I tried replacing the band with more rigid things first. Makes no difference if the glue has gone hard.
I even tried a thin steel rod but will use pvc coated copper rod if I make a successful repair.
Have a good supply of that.
It was this that made me realise that it is the aging, expansion and hardening of the original glue that breaks the contact.
Peeling the plastic foil cracks and breaks the contact membrane on the other side.
Stroking each individual contact with the pressure of a hot iron remelts the glue and remakes the contact without that breakage.
The iron I used was a fixed temperature one of around 400C which is a bit too hot for the plastic foil.
Have now got an iron that can be set as required between 150C and 450C.
Will temperature test some gash plastic foil connectors from the junk box first.
John